Detachable heel tread



Aug. 18, 1953 W. J. HERALD ETAL DETACHABLE HEEL TREAD Filed Nov. 28,195p III w- 5. mama (w) mummy hq- (Lu/mm, mm PM HTIMIJEKQ Patented Aug.18, 1953 DETACHABLE HEEL TREAD William Joseph Herald, Strathmore,Victoria, and

Robert Murray, West Brunswick, Victoria, Australia Application November28, 1950, Serial No. 197,878 In Australia December 5, 1949 3 Claims.

This invention relates to improved means for detachably fixingreplaceable wearing pieces base layers of leather or other suitablematerial-to the undersides of the heels of boots and shoes.- I

The underside of the heels are subject to much wear in use in comparisonwith soles, uppers and other parts of footwear, and require renewal orreplacement at frequent intervals during the useful life of a pair ofboots or Shoes in order to retain the shape and appearance thereof.

In manufacture, the base or bottom pieces are usually firmly secured asby pins or nails, and the replacement of such pieces in general, requireskilled attention and cannot be undertaken by the user.

It has been previously proposed to provide replaceable wearing bases orpieces for the heels of boots and shoes, but hitherto the devices forsecuring the former to the latter have been complex, and costly, andmeans have been required in the heel for the sole purpose of detachingthe wearing piece when replacement became necessary. 7

Now the principal object of this invention is the provision of simple,inexpensive and eificient means whereby a replaceable piece or base, maybe detachably fixed to a shoev or boot heel so as to remain firmlyattached thereto, but may be readily replaced by a user, upon becomingunduly worn.

A further object of the invention is to provide a replaceable wearingpiece having projecting elements fitting sockets in a shoe heel,

outward displacement of the projecting elements from the sockets beingopposed by frictional resistance to movement of the former in the latterand by creation of partial vacuum in the sockets by outward movement ofthe projecting elements in the sockets.

Another object of the invention is to provide a replaceable wearingpiece having holes in the projecting elements in communication with thesockets and extending partly but not completely through the elements,said holes responsive to predetermined wear of the elements connectingthe interior of the sockets with the atmosphere and preventing theformation of partial vacuum in the sockets by outward displacement ofthe elements in the sockets.

A better understanding of the invention will be had from the followingdescription of the practical exemplary arrangement as applied to theheel of a boot or shoe and depicted in the accompanying drawings.

. 2 In these drawings: 1 Fig. 1 is an elevation, partly in section, ofthe rear portion of a shoe fitted with a replacement heel pieceaccording to the present there is formed in the heel 5 as by drilling,

several cylindrical recesses 6 which extend D- wardly from the undersideof the heel for a,

required distance. Preferably, three of such recesses 6 are provided,two of which arelocated in the vicinity of the front corners of theheel, while the third is positioned centrally and near the rear roundedportion of the heel.

The replacement piece 1 to be applied to the heel formed with thecylindrical recesses 6 has the same external shape and size as the heeland to correspond with the position and spacing of v the recesses.

Accordingly, upon the replacement piece being applied to and centeredupon the heel, the apertures in the former will be positioned in exactaxial alignment with the recesses in the latter. Mounted in eachaperture in the replacement piece is a peg or plug 8 which is formedtoclosely fit the corresponding cylindrical recess in the shoe heel. I v

The pegs are provided with axial holes or recesses 9 which extend fromthe entry ends IU of the pegs for a required distance towards the headsof the pegs and with axial extensions or blind holes ll of smallerdiameter than the holes or recesses 9 which extend part way through theheads.

The heads [2 of the pegs or plugs are of tapered or conical truncatedform, the larger ends of the tapered heads being of maximum diametertapering to a minimum diameter somewhat less than the diameter of thebody I5 of the pegs which is of cylindrical form.

At the smaller ends of the tapered heads, D

"ripheral shoulders 13 are formed and the opposite or entry ends H] ofthe pegs are somewhat tapered to permit of easy engagement with thecylindrical recesses 6 and with the apertures in the replacement piece.

The pegs or plugs 8, so constructed, are driven into the apertures inthe replacement piece, so that the larger ends [2 of the tapered headsare flush with the wearing face of the replacement piece.

Upon thepegs being thus inserted into: the apertures, the cylindricalbody portions 15 of the former project from the apertures for engagementwith the cylindrical recesses. 6. of the heel.

As may best be understoodz by reierencest Fig. 4, in order to firmlysecure thepegsimthe replacement piece, a hollow tool or punch is placedover the projecting body [5 ofeachm a: and is thrust under high pressureupon the. inner face N5 of the replacement piece to force the contiguousmaterial of the latter firmly against the shoulder l3 at the smaller endof the tapered head, thereby securing the, P against displacement.

The replacement, piece I is-secured-totheheel yn h pr j c inepe odies15; into. the. corresponding recesses 6, air within the recesses and.the axial holes- 9,.and' H of: the pegs bein partially. expelled asthesame are driven into the-recesses.

Upon a replacement piece being undu y 1011 the-axial (BXBGQSlQQSOYbliIlQ hOIGS H' are opened 0 Phe-replacement pieces;;for. each sizeof; shoeorboot heel are interchangeable and-are easily detached; and;replaced by: a, wearer, and moreover; ifz he,rep acemen i ieces on a.pair of..' s.

are more-worn at someparts; than others for instance; at; the edge I],they may be readily changed, from; one; heel tothe other so; as; to-

iderablyextend; h ir pe iod; fi ti m Eurthermc er he; eplacem nt: iec saste con truc d; ections so; that. arts;v th reof, apt to become worn,such as the rear heel; p.01: on ibe discarded and p c d-by others havinattac m nt: pegs; r; p s; as; b w

scri ed. Accordin ly, e fiectiyei ife of he r placement pi ces; may he:furth r? d d.

The pegs. or; p1uss1.ma e cnstructed; o

w odrplasti z ther itable m ri ls as maybe..-found esirable-orn cessarnWe claim: .1 alep ac m ntp ece; or, a hoe heel a ing secured therein andextending from a side thereof, a plurality of projecting attachmentmembers fitting complementary sockets in the shoe heel and opposingdisplacement from the sockets by frictional resistance and creation ofpartial vacuum therein by outward movement in. the sockets, saidattachment members ing longitudinal holes extending partly therethroughopen at the ends within the sockets, whereby upon predetermined wear ofsaid membersthe sockets will be connected with the atmosphere to therebyprevent the creation of partial. vacuum in. and facilitate extraction ofsaid attaclimentmembers from said sockets.

2. A replacement piece for a shoe heel having, secured, therein. andextending from a, side thereof a plurality of spacedly related pefitting correspondingly spaced complementary socketsinthe shoe heel andopposing displacement from the socketsby frictional resistance andcreation ofpartial: vacuum therein; by; 011tward movement in thesockets, said: pegs havin axial. holes extending. partly.therethrouglnopellu. at the ends within the sockets, whereby uponpredetermined wear of said members the sock: etsv will be connected withthe atmosphere; to thereby prevent the. creation of partial, vacuum-.1in and facilitate extraction. of said attachment; members fromsaid.sockets..

3. A replacement. piece for a shoe; heel hav ing secured. therein andextending from; a. Sid thereof; a plurality of: spacedly. relatedcyndrical pegs fitting correspondingly. spacedi ci lindrical. sockets inthe, shoe. heel; and. opposeing' displacement. fromthe; sockets. by,frictional; resistance and creation of partial. vacuum therein byoutward; movement, inv the ocke s shoulders on. the pe s'engaging theside. of; the replacement piece andtruncated; heads on;the:

pegsextending from the shoulders through the,

replacementpiece andsecuringthe pegs herein; said pegs. having axialholesopen: to .the interiors. of the sockets terminating within.- the.truncated. heads, whereby upon predetermined Wear the.

. cylindrical sockets. will be connected with; the

atmosphere to thereby prevent the; creation 01? partial vacuum, in andfacilitate. extraction Of the. pegs fromthe sockets.

WILLIAM- JOSEPH HERAlE'iD-e ROBERT MURRAY;

References. Citedtin the file; of thislpatent.

UNITED STATES PATENTS Number Name: Date...

Re.18,959 Jorgensen .,Sept. 26, 19 3.3..- 1,l99,5;25 Boutelle -p. Sept.26,1916. 2,155,584, Bryant-et a1. Apr. 25, 1.939..

